16-1

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Ch 16 Notes<---Unit Header - Next Assignment--->

Note for next year... Add enthalpy
Time Length
  • 2 Days
Instructions

  1. Instructions

    1. Answer the following questions on a new wiki titled 16-1 Thermodynamics Notes Worksheet using the notes found at the bottom of the page. Btw, play the video below. The video in the ppt on conduction, convection, and radiation doesnt play.

    Questions
    1. Define Energy
    2. Give 3 examples of potential energy (use your brain to figure this out based on the definition. Not google)
    3. Give 3 examples of kinetic energy (use your brain to figure this out based on the definition. Not google)
    4. Only about 20% of the energy in your car's gas is converted into motion. According to the law of conservation of energy, can the rest of the energy just vanish, or does it convert to another form of energy? What form does it convert to if so.
    5. What is the symbol for heat?
    6. T or F? Heat is similar to temperature but not the same thing
    7. T or F? Heat is measured in calories or Joules.
    8. What is the rate at which things heat up called? What is its symbol?
    9. A rock can absorb more energy before heating than water. Is its specific heat higher or lower than water?
    10. When calculating ∆T what goes first when you subtract. What the temp ends at or what it starts at?
    11. What is the heat released by 35 g of water to lower its temperature from 90 °C to 20 °C ? (hint: it should be negative and the unit is J)
    12. Define and give an example of conduction, convection, and radiation
    13. Is q positive or negative when heating?
    14. What does a heat curve show?
    15. T or F? At the point on a heat curve where the state is changing, heat is applied to the system but the temperature does not increase. (this is true if the line is flat left and right because "x" increases, but "y" does not (no rise))
    16. Between Hf and Hv, which one is the energy needed to make a vapor (gas)(aka to boil)
    17. If you are calculating heat and the temp change occurs across two states (like from solid to a liquid), can you answer that with only one equation?
    18. Calculate the heat needed to heat water from -30 °C to 200 °C (5 equations, then add their answers)
    19. Is combustion (like burning wood) exothermic or endothermic? How do you know?
    20. Define equilibrium.



Notes
16-1 Thermodynamics Notes.pptx

btw, there is a video in the ppt that wont work. so play it from here.